John ernst



. (NoModel.)

J. ERNST.

VISE'.

Patented Aug. 19,1890.

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Y UNITED STATES PATENT OFFICE.

AJOHN ERNST, OF BAY CITY, MICHIGAN.

VISE.

SPECIFICATION forming part of Letters Patent No. 434,541, dated August19, 1890.

Application tiled June 20, 1890.

To all whom it may concern:

Be it known that I, JOHN ERNST, a citizen of the United States, residingat Bay City, in the county of Bay and State of Michigan, have inventedcertain new and useful Improvements in Vises; and I do declare thefollowing to be a full, clear, and exact dcscription of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to theletters of reference mark ed thereon, which form a part ot'this specification.

My invention relates to improvements in vises, and pertains toimprovements in that class ot' vises in which a divided or sectional nutis used as a means of providing for an expeditious method'of moving thescrew to a great distance in either direction; and the inventionconsistsin the arrangement, construction, and combination of the variouselements and contrivances which I use in the formation of the. device,and which I shall presently describe in detail, and also specificallypoint out in the claims of this specification.

The object of the invention is to provide a cheap and reliable means ofopening and closing the sections of a two-part nut of a vise and to soarrange and construct the mechanism as to provide an easy and effectivemeans of operating the nut whereby great strength of the parts isprovided when subjected to a heavy strain, and simplicity and cheapnessare attained in the manufacture. The devices by which I attain thisobject will be found illustrated in the accompanying drawings, in theseveral views of which will be found the same letters of referenceindicating the same parts.

Figure l represents arear view in elevation of a device containing myimprovement. Fig. 2 is a longitudinal vertical section of the same. Fig.3 is a side view in elevation of the rear portion of thesame. Figs. 4and 5 are a rear and side view in elevation of the nut-sections detachedand showin g the parts in position when the nut-sections are closed forengaging with the screw. Figs. 6 and 7 are the same, showing theposition of the parts when the nut-sections are open and the screw freeto move. Figs. 8 and 9 are views in different positions Serial No.356,083. (No model.)

and detached of the sleeve for operating the two nut-sections. Fig. l0is a section of Fig. l, taken at a:

a represents the rear or stationary jaw of a machinists vise, and Z9 isthe base thereof, which is secured to the bench in any convenientmanner, and from t'ront to rear of the jaw above the base'is formed anopening c, into which is passed a hollow arm d, to the outer end ofwhich is attached or formed integral therewith the upwardly extendingmovable jaw e, while through the lower portion of the jaw e andlongitudinally through the chamber f in the arm d is passed a screw g,provided on its outer end with a collar h and head t', through which ispassed a screwleverj, after the usual form of vises of this character.

Vithin the front portion of the opening c is a piece 7a, formed integralwiththe base b, and projects upwardly from the base into the chamber f,and through this portion k is provided an opening Z for the screw andserves to retain the screw in a central position in the chamber, andalso serves to support the sections m and n of a two-part nut, which areplaced directly in its rear within the opening c, in the bottom or baseof which is arranged the parallel grooves o and p in suitable positions,and into these grooves are passed the lower ends q and r of the pieces mand n, which compose the two-part nut. These ends q and c' are of asuitable form to allow the ends to oscillate in the grooves, so that theupper ends s and t of the sections may be thrown apart or broughttogether, as desired, and the middle portions of the sections areyprovided with threaded `cavities u and-v,which, when the two sectionsare closed togethent over the threaded portions of the screw and engagewith the threads thereon, but when the two sections are thrown apart arefreed from engagement with the screw, so that the screw will freely passto and fro between them. The upper end s of the piece m is pivoted at wto one end of a tie piece or plate c', while the opposite end of theplate reaching over the upper end t of the part n is provided on itsunder side with a notch b', which catches over the end t and serves tosecurely retain the two sections of the nut, together with the threadsthereof, in en gagementwith the screw,

IOO

so that the action of the parts when in this position are practicallythe same as if the nut were solid.

On the rear side of the plate a', and near its free end, is pivoted by abolt or screw c', or in any other convenient manner, the upper end of alifting-rod d', while the lower end of the rod is pivoted to theear-pieces e', projecting upwardly from a sleeve f', which is placedacross the opening c, and through a central longitudinal opening g inthe sleeve, and also through openings in the lateral sides of the jaw ais passed a shaft h', and upon the outer projecting end of the shaft issecured the lever t", projecting upwardly and provided with a weight jupon its free end, while the sleeve is secured in position againstturning upon the shaft by a pin 71: passed transversely through thesleeve and shaft.

Upon the inner side of the sleeve are arranged the lugs or arms l and min pairs, with a space n and o between eachpair, and in these spaces itand. o rest the longitudinal angesp and q', which project rearwardlyfrom the nut-sections 'm and fn; and these flanges are each providedwith a straight upper portion i" and with an inwardly-sloping lowerportion s', so that as the sleeve is oscillated by the lever i" the armsl and m move over the fianges, and bearing against the inclined portionsthereof operate to move the nut-sections to or from each other, as thecase may be, while the rod d', as the lever t" is thrown toward thefront of the jaw,A is moved upward by the oscillation of the sleeve andlifts the free end of the tie-plate a until the notch li is free fromengagement with the end t of the nut-section it, and during this timethe arms Z and m have moved over the straight portions o" of the flangesand the nutseetions remain in the same position; but on the tie-platebeing raised the arms Z and m then move over the sloping portions s ofthe flanges and cause the upper ends of the nutsections m and n to bethrown apart to free the screw, as shown in Figs. 6 and 7, while thereverse movement of the lever to oscillate the shaft in the oppositedirection causes the arms Z and m to move over the flanges in theopposite direction and bring the nutsections together while the arms aremoving over the inclined portions of the fianges, and to cause thetie-plate to resume its original position and engage the notch b withthe end t while the arms move over the straight portions i" of theflanges, so that the nut-sec tions are quickly freed from engagementwith the screw by the oscillation of the lever t', whereby the jaw e maybe freely moved iiiwardly oroutwardly, as required, and the parts are aseasily thrown into engagement again by oscillating the lever in theopposite direction, while the weight upon the lever moving beyond thepivotal point of the lever in either direction holds the parts inposition either when the nut-sections are open or closed.

As shown in Figs. l and IO, the jaw a is provided with an oflset a,havinga rear wall b", of a concave form, and the offset is provided alsowith a groove c in its bottom side of a circle coinciding with thecircle of the concave side wall b, and in the offset is tted a jawportion d, with a convex rear side c, and provided with a lip f, fittedinto the groove c, while the upper back portion of the piece is providedwith a lip g, projecting backward over the upper end h of the jaw. Theportion CZ is provided with slots t, cut horizontally through from frontto rear, and through these slots are passed the bolts j, with theirinner ends tapped into the jaw a, so that while the bolts remainstationary the piece d may be moved either right or left, whereby thecurved portion on its rear side causes the front face It of the jaw totalre a position inclined relative to the opposing jawface, and throughthe jaw a is passed a springactuated bolt Z, with its inner end reachinginto an opening or recess m in the central portion of the rear curvedside of the piece d, which serves to hold the piece d, with its face j,parallel with the face of the front jaw; but by the withdrawal of thebolt Z from engagement with the piece d the piece may then be turned inits bed to allow the jaws to fit upon the tapering pieces, &e.

It will be observed that by the particular construction and location ofthe parts nutsections m and n are passed into position from the rear,and that when the sleeve f and shaft h are in position, the sleevecomsectioiis serves to retain all of the parts in position againstwithdrawal, while the portion Zt, against the front side of thenut-sections, forins a solid and reliable support for the nut against aheavy strain from the screw when a piece is solidly clamped between theaws.

J Of course it will be understood that while I have shown my device asapplied to an ordinary inachinists vise, the sections of the twopart nutand their operating devices, which constitute the principal features ofmy invention, can be as well applied to any other coinmon form of vise.Therefore Ido not limit my invention to the particular form of vise; but

What I claim, and desire to secure by Letters Patent, is

1. In a vise, the combination, with the movable and stationary jawsprovided with openings for the screw, a screw passed through the saidopenings, and the nut-sections m and n, pivotally secured by their lowerends to the rear portion of the stationary jaw below the screw, and withtheir upper ends extending above on opposite sides of the screw andprovided with threaded recesses fitting over and engaging with thethreads of the screw, of a tie-plate pivotally secured by one end to theupper end of one of the said nut-sections,

and provided on the under side of its oppo site free end with a notch,as described, reaching over and engaging the upper end of the IOO ing incontact wit-h the rear side of the nutn IIO other nut-section, anddevices for raising the free end of the plate to release the notch,substantially as set forth.

2. The combination of the stationary and movable jaws of a vise, a screwpassed through the jaws, a two-section nut with the lower ends of thesections pivotally secured to the rear side of the stationaryjaw belowthe screw, andwith their upper ends extending above on opposite sides ofthe screw and provided on the inner side of their middle portions withthreaded recesses engaging with the threads of the screw, a tie-platewith one end pivoted to the upper end of one of the nut-sections andhaving on the under side of its opposite free Aend a notch catching overthe upper end `of the other nut-section, with a sleeve f journaled tothe stationary jaw in rear of and transversely with the nut-sections andprovided with ear-pieces e projecting from its side, alifting-rod d',with its lower end pivoted to the said ear-pieces and with its upper endpivoted to the outer free end of the said tieplate, and a lever foroscillating the said sleeve, substantially as set forth.

3. In a vise, the combination, with the station ary and m ovable jaws,andthe screw passed through the said jaws, of the nut-sections in rearof and pivotally secured by their lower ends to the stationary jaw andwith their upper portions extending above on opposite sides of the jaw,and provided on their rear side edges with the flanges p and (1, havingthe sloping portions s and the straight portions r', A

site end catching over the upper end of the other nut-section, a sleevef, journaled to the stationary jaw transversely with and below thescrew, and provided with the arms l l and m m', projecting from its sideand on the opposite sides of the said anges p and q', respectively, andmeans for oscillating the said sleeve, substantially as set forth.

4. In a vise, the combination of the rigid jaw a, provided with an oseta, having a curved rear wall b and a groove c", a piece d in the saidoffset and provided with a curved rear side e and a curved lip f" within`the groove c and provided with transverse horizontal slots i", thebolts j passed through the said slots and tapped into the jaw a, and thespring-actuated bolt l, passed through the jaw a and reaching into thepiece d, substantially as and for the purpose set forth..

In testimony whereof I affix 1n y signature 1n presence of twowitnesses.

JOHN ERNST. Witnesses:

G. P. THOMAS, JAS. E. THOMAS.

